The Stovebolt Site Forums The Shop Area Engine Shop portable welder?

Ok, I'm in serious straits here. My portable welder won't start. It is a four cylinder Wisconsin on a trailer. It DID run great, then one day I got distracted and shut it off and forgot to turn off the fuel. Next day I started it but it was running real funky. Shut it down and checked the oil and the crank case was full of fuel. I drained it and put in new oil. Turned it over a bit to get the new oil flowing and then tried to start it- wouldn't start. I don't know squat about magnetos or lawn mowers for that matter. I checked the points and appear to have a yellow spark there (weak spark?) and I have a yellow spark at the plugs. It has good compression and is getting fuel. I think the do-hicky behind the points is the mag and it is down low in the back left side of the motor at about the same level as the top of the crank. Could the mag have gotten gas and oil into it? If so, how do I fix it? I need this beast running so I can finish welding on my 45 GMC COE and finish building my car trailer. (I'm getting really tired of working in the barn and not on my truck.) I've been over a month puzzling on this and am about ready to tear it apart just to see what makes it tic.